Well, if the attitude of the, then, Hellion leadership is a problem, you could always have both leaders killed and create replacement leadership that isn't quite as berserker in forethought.
This always begged the question for me of how you 'role play' a faction, because I'm helping run a 5th Succession War set-up, and having factions react to certain events is important in determining what conflicts start up after the fact.
If you're really up for it, I suggest gaming out a couple different scenarios. Take a force, run the gauntlet with them. Then, depending on how things fare, look at facing down the Hidden Com Guard in taking Terra by surprise. Consider that some of the 'simulations' the leaders will consider.
Since they had to send in the Dragoons in the canon timeline, what are some of their worst fears that they might plan for? It had to cross someone's mind the potential idea that they could arrive to find what's left of the Inner Sphere in a state of advanced Tech far beyond what they currently have.
And, that begs the question - were the Hellions simply invading the Inner Sphere? Or were they looking to investigate the state of the Inner Sphere before 'heading home'?